<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>2-受控组件</title>
</head>
<body>
  <div id="root"></div>
  <script type="text/javascript" src="../js/react.development.js"></script>
  <script type="text/javascript" src="../js/react-dom.development.js"></script>
  <script type="text/javascript" src="../js/prop-types.js"></script>
  <script type="text/javascript" src="../js/babel.min.js"></script>
  <script type="text/babel">
    class Login extends React.Component{
      render() {
        return (
          // 常用的事件定义，变化的值存入state中，就是受控组件的用法
          <button>按钮</button>
        )
      }
    }
    ReactDOM.render(<Login/>,document.getElementById('root'))
  </script>
</body>
</html>